New and Little Known American Paleozoic Ostracoda. 205 
BEYRICHIA SIMULATRIX, N. Sp. 
Plate XVIII, Fig. 7 a, b. 
Compare, Leyrichia fetoidea, White and St. John, 1868, Trans. 
Chicago. Acad- Sci. ps 626: 
Size: Length, 0.73 mm.; height, 0.42 mm. 
Valves obliquely subovate, widest posteriorly, back straight, 
ends and ventral edge neatly curved. A moderate but well de- 
fined flange around the free margins. A large ridge-shaped lobe 
begins near the center of the posterior margin and, running down 
to the ventral edge, turns and, at the same time gradually widen- 
ing, proceeds parallel with the ventral margin nearly to the anterior 
end. ‘This curved ridge occupies nearly half of the surface. Just 
above it a very narrow ridge, with a large and very prominent , 
globular termination reaching the dorsal edge, and situated in 
front of the center. An equal distance behind the center, and not 
reaching the dorsal margin, a smaller prominence. Entire surface 
beautifully punctate or minutely recticulate. 
The lobation of the valves is much asin B. fetoidea, W. & St. 
J., described from the upper Coal Measures of Iowa, yet, provid- 
ing that species is reliably illustrated, there are sufficient differences 
to count them as distinct. In the Iowa species the ventral lobe 
is thickest where in this species it is thinnest. Nor does White 
and St. John’s figure show anything of the thin prolongation from 
the antero-dorsal prominence. The shape of the valves also seems 
to differ. 
Position and locality: Shaly limestones of the Chester group, 
near Grayson Springs, Ky. 
BOLLIA GRANIFERA, N. Sp. 
Plate XIT, Figs. 12 a, 0b. 
Size: Length, 2.1 mm.; height, 1.45 mm.; greatest thickness of 
right valve, 0.5 mm. 
Valves comparatively large, oblique, back long, straight, with 
well-marked cardinal angles; anterior margin vertical above, then 
curving backward into the rather strongly convex ventral margin ; 
posterior edge with a bold and nearly uniform curve. Free mar- 
gins with a strong and wide, concave frill, overhanging and extend- 
